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LGE Internal Use Only
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4. TROUBLE SHOOTING
4.8 Keypad Backlight Trouble
START
Press END Key
to turn on the power
Keypad Backlight Works?
YES
NO
Backlight Control Signal
is 2.8V at R517?
Resolder or Change Q501
YES
Change Main Board
NO
Keypad Backlight Works?
Finish
YES
1
2
NO
Содержание KU580
Страница 1: ...Date August 2007 Issue 1 0 Service Manual Model KU580 Service Manual KU580 Internal Use Only ...
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Страница 208: ...Note ...
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